Blind-stop



(No Model.)

B. W. HOXIE.

BLIND STOP.

No. 430,956. Patented June 24, 1890.

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UNITED STATES PATENT OFFICE.

BENJAMIN WV. HOXIE, OF HARTFORD, ASSIGNOR OF ONE-HALF TO LYDIA A. HOXIE, OF BUCKINGHAM, CONNECTICUT.

BLIND-STOP.

SPECIFICATION forming part of Letters Patent No. 430,956, dated June 24, 1890.

Application filed June 12, 1889. Serial No. 314,044. (No model.)

To all whom. it may concern:

Be it known that I, BENJAMIN NV. HOXIE, of Hartford, in the county of Hartford and State of Connecticut, have invented certain new and useful Improvements in Slat Locks for Blinds, of which the following is a full, clear, and exact description, whereby any one skilled in the art can make and use the same.

The object of my invention is to provide a To cheap and convenient device by means of which the slats of window-blinds and the like may be held in an open or closed position, the device being readily applicable to existing blinds, as well as to those in process of construct-ion.

To this end my invention consists in the combination of the several parts making up the device, as more particularly hereinafter described, and pointed out in the claim.

Referring to the drawings, Figure 1 is a front View, in elevation, of part of a windowblind illustrating the method of applying my invention. Fig. 2 is a detail sectional view of the blind and a side view of the device.

Fig. 3 is a detail View showing the connection between top and bottom slat-connecting rods.

In the accompanying drawings, the letter a denotes the frame of a blind or other like structure that has an opening in which are pivoted a number of slats, usually united by the rod 1) in such manner as to enable all of the slats to be moved all together by moving the rod either to open or close them. The lock 0 is composed of a base-piece d, having the portion 01, forming a foot through which openings are made for the reception of screws or nails that may be used to fasten the base to the frame of the blind directly below the slats and in line with the rod. To this base 0 d is pivoted one arm 2 of a toggle-lever, the other arm 6 being pivoted to the first and also to the lower end of the rod b. The pivotsupport of the lower part of the toggle-lever projects far enough from the blind to enable the central pivot c that unites the two arms of the toggle-lever, to be thrown inward toward the blind in such position that it passes beyond a line drawn between the pivot-pins d (1". Vhen the levers are in this position,the rod is held upward at the upper limit of its play, and is securely locked in this position by the pressing of the two arms at the pivot d" against the slats of the blind, any attempt to open the slats being resisted by the pressing of the two levers against the slats, the pivot uniting them having been thrown past the center, as explained.

In order to open the slats, the levers are pulled forward away from the blind until the central pivot has passed onto the opposite side of the line of centers referred to into the position illustrated in dotted lines in 2. \Vhen the levers are in this position, the slats are held wide open.

By making the several pivot-joints to move with considerable friction between the parts the slats may be set at any point between the open or closed position.

The several parts of the lever may be made of any convenient material, as metal cast or forged to shape, and any two sets of slats may be united by means of connecting-links f, so as to operate both sets by one locking device.

I claim as my invention- In combination, the frame a of a blind, the slats pivoted thereto, the rod 1), connected to the several slats, the lock 0, composed of the angular base-piece d, having a foot portion with the screw-holes, the arm e, pivoted to So the projecting portion of the base-piece, and an arm 6, pivoted to the first and to the lower end of the rod 1), the pivot-pin (1 being located at a greater distance from the frame than is the pivot-pin d when the slats are closed, whereby the joint may pass the deadcenter and lock the slats closed, all substantially as described.

BENJAMIN W. I-IOXIE.

Witnesses:

CHAS. L. BURDETT, W. B. JENKINS. 

